Setophaga petechia
Drawn from open occurrence records in and around Olympic National Park, aggregated onto a 25 km grid. A cell is matched by its centre, which can sit up to 16 km outside the boundary, so this covers the surrounding country too.
Occurrence records measure where people looked and found something, which is not the same as where the animal is. This is a relative likelihood, not a probability.
Records exist for April, May, June, July, August, September and October, with the widest coverage in April, May, June, July, August, September and October. A quiet month can mean the animal was absent, or that nobody was looking.
A grid cell is a square of the map, not a sighting: 1 square of 25 km carry records for Yellow Warbler in and around Olympic National Park, and the 6,740 records behind them were collected by other people and published openly. Nothing here counts animals, and a place with more records is not always a place with more animals.
Arenal is the park where the Yellow Warbler is recorded, with records gathering most thickly in the United States, Canada, Costa Rica, Panama, and Mexico. The atlas holds about 2.2 million records of this bird from eight countries. This map follows where those records concentrate.
Of the 20 species with an atlas page recorded in and around Olympic National Park, the Yellow Warbler is the 7th most recorded.
The full atlas page, and everywhere else it is recorded